Boiler.



J. T. JONES.

BOILER.

APPucATlloN FILED MAR. 28, 1914.

Patented July 20,1915,

3 SHEETS- l SHEET 1 1.T.1oNEs.

1,147,326. Patented July 20, 1915. gy t3 i n 3 EETS-SHEET 2. l i

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l l Q t 74 j? u u i ED STFA-TES*v PATENT OFFIoE.

. .'IOHN T. JONES, OF'IRON MOUNTAIN, IvIIcLIIQAN, AssIGNoR To NEW METALS-Pn'ocnss f OOMPANY,.OF enrolled ILLINOIS, A CORPORATION or ILLINOIS.`

following is a specification.

lisorLnrtff Application mea Marchas, 1914. seriaiNasasgoco.

To all 'whom t may concern:

.Be it known that I, JOHN T'. JONES, a citizen of the United States, residing at ron Mountain, in the county of Dickinson and State of Michigan, have invented a newv and usefulfmprovcment in Boilers, of vwhich the jThis invention `relates yparticularly to boilers, such as steam-boilers; and the primary object is tol provide a simple, highlyefficient boiler.

YThe invention is illustrated in its preferred embodiment in they accompanying drawings, in which- Figurev 1 represents ak side'v elevational ,view, partly in section,V Aofa `boiler Vconstructed in accordance with my invention;

Fig; 2, an enlarged broken, sectional view taken, Vas indicated, at line 2 of Fig. lvand showing the connection between; one of the water-tubes and a head with whichit connects;` Fig. '3, a transverse sectional view of the boiler, the view taken as indicated at line 3` of Fig. 4; and Fig. 4, a horizontal sectional view taken as indicated at line 4 of Fig. 3. Y' .1

' In` the construction illustrated, A Arepresents a furnace-body provided with a smoke-stack A; Yand B, B', two series Vof water-tubesA dividing the interior of the furnace into an inner `colring-chamber C and outer complete-combustion chambers G. Thefurnace preferably has the curved top 1 which is providedy with a charging-device 2 through which coal Or'woo'd may be lintroduced. The series of water-pipes yare connected, respectively, attheir upper ends with large horizontalheads or pipes 3 which are separated from each Y other ff sufficient distance to enable the fuel to be charged'- into the internal chamber C. The pipes B, B are respectively connected at their lower ends with large horizontal base-pipes 4 which are close enough together to support the fuel butare spaced to permit the coke to be discharged. The pipes B are preferably attened or made oval and are bowed outwardly at their central portions so that the chamber C, which is bounded laterally by the two series of pipes B, B, is expanded at its central portion, the purpose being to allow the charge of coal, whose upper surface is indicated by the lines 5, to be partially supported by the lower portions of the series of pipes. A longitudinal central specificati@ of Lette'sratent. Patented'ly `2501 i915- pier or abutment@6 1A is disposed beneath the space `7 which separatesth'e lowerpipes 4, being separated `from Athe pipes by; spaces 8 sufficiently llarge to'l allow the coke vtofeed Out'onto the grates 9 which :lanltthe central Alongitudinal base-wall 6. Below. the

grates are provided lateral doors 10, fitted with air-registers r11. Above the grates are provided doors v12 through` which a poker may beth-riletto stir the fire. The gratos arek provided 4with longitudinal sliakeibars 921;: :Air-'admission .devices 13 are connected withthezlatera-l walls ,of the furnace below they lateral 1 complete-combustion chamber C. Air is `admitted to the upper portion ofthe coking-'chamber C'through the -twyers 14 provided with air-regulating devices 15.`

Theends'l ofthe furnace are shown removable,l to enable the tubes and` pipes to be cleansed when necessary. The curved verticalpipes of each series B,--B 'are-dis-` posed side by side .andclose together, so that thechambers orfflues C are formed betweenzthe vertical series of pipescand the side-walls of the furnace. 1 In the operation of the furnace, thefuel,

such as bituminous coal, is charged Athrough y the device 2 and falls between the upper horizontal pipes 3 into the central chamber C. "By means of a down-draft of vair furnished by the twyers v14, `a coking opera-tion is carried on. inthe central chamber. kThe gases Lthus formed pass upwardly .through the lues C', and complete combustion is effected by airgadmitted throughthetubes 13.

The coke gravitates downwardly 'between` the pipes 4 and isdeflected through the passages 8 and is consumed on the gratos 9,

It will now be understood that by means `of the improved lconstruction it is possible air being v:supplied to the grates through the registers 11.

claims should be construed as broadly as permissible in view of the prior art.

What I regard as new and desire to secure by Letters Patent is l. In a boiler, the combination of a central colring-chamber having at its upper end a central passage for the introduction of fuel, means for supplying air to the upper portion thereof, water-legs at the sides of thecolring-chamber, up-draft flues between said water-legs and the adjacent walls of the furnace, a grate in the base-portion of the furnace beneath each updraft flue with means for drawing coke to the grates as it is formed, and means for admitting air to the lower portions of the updraft flues.

2. In a boiler of the character set forth, the combination of a furnace provided at its upper portion with a fuel-charging device, waterlegs spaced in said furnace at a distance from the lateral walls and separated from each other, thus affording a central colring-chamber betweenthe water-legs and up-draft flues outside the water-legs, said coking-chambers and flues being open at their upper and lower ends, means for supplying air to the upper portion of the colring-chamber, grates in the base-portion of the furnace beneath the up-draft flues, means for deflecting coke, as formed, to the grates, and means for supplying air to the base-portions of the up-draft flues.

3. In a boiler of the character set forth, the combination of a furnace-body, two series of outwardly-bowed water-tubes therein spaced with relation to the side walls and with relation to each other, thus affording a central colring-chamber and flanking up-draft flues, means for charging fuel into the upper portion of the central colringchamber, means for supplying air to the upper portion of the coking-chamber, grates at the lower portion of the furnace-body beneath the up-draft flues, and means for admitting air to the up-draft outer ues flanking the water-tubes.

4. In a boiler of the character set forth,

the combination of a furnace-body, two series of outwardly-bowed water-tubes therein spaced with relation tothe side walls and with relation to each other, thus affording a central coking-chamber, means for charging fuel into the upper portion of the central colring-chamber, means for supplying air to the upper portion of the colingchamber, grates at the lower portion of the furnace-b dy., means for admitting air to the up-drafl outer iues flanking the watertubes, and` means for admitting air below said grates.

5. In a boiler of the character set forth, the combination of a furnace-body having curved lateral walls and a curved top wall, two series of vertical curved water-tubes spaced with relation to the furnace-walls and aording between them a central coking-chamber, heads connecting the tubes of n each series at their upper ends, said heads spaced to admit fuel between them, means for admitting air to the upper portion of the coking-chamber, grates at the lower portion of the furnace, and means for admitting air to the lower portion of the furnace.

6. In a boiler of the character set forth, the combination of a furnace-body, a pair of horizontal heads in the upper portion thereof, al pair of horizontal heads in the lower portion thereof, curved water-tubes connecting said heads, said tubes spaced to aord between them andthe lateral walls up-draft flues and said series of tubes affording between them a central colingchamber, means for charging fuel between the upper heads, means for admitting air to the upper portion of the coking-chamber, a central base-wall below the space between said lower heads, grates flanking said central base-wall, and means for admitting air to the lower portion of the furnace.

A. C. FISCHER, F. A, FLORELL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

